Reply To: Radiator Neck Inner-Diameter?


Herbert and David,

Measurements of the “new” dog-bone radiator cap OD is as follows.

2.095″ – 2.096 and 2.092″. (only three measurements).

The OD of an existing and usable cap threads is 2.013″.

The ID of my radiator neck is 1.977.

The pitch on both caps is 14.